Development of a handheld widefield hyperspectral imaging (HSI) sensor for standoff detection of explosive, chemical, and narcotic residues

Nelson, Matthew P.; Basta, Andrew; Patil, Raju M.; Klueva, Oksana; Treado, Patrick J.

doi:10.1117/12.2016289

Cited by 12 publications

(6 citation statements)

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“…To address this need, CISS developed and continuously improved a portable molecular surface analyzer called VeroVision. [8] VeroVision is a smaller and simpler version of LightGuard ( Figure 1B) capable of detecting the same types of targets at LightGuard, but at a short standoff distance of 1-20 m. VeroVision™ characteristics are summarized and compared to LightGuard in Table 1.…”

Section: Portable Hyperspectral Sensor (Verovision™)mentioning

confidence: 99%

Advanced shortwave infrared and Raman hyperspectral sensors for homeland security and law enforcement operations

et al. 2015

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Proliferation of chemical and explosive threats as well as illicit drugs continues to be an escalating danger to civilian and military personnel. Conventional means of detecting and identifying hazardous materials often require the use of reagents and/or physical sampling, which is a time-consuming, costly and often dangerous process. Stand-off detection allows the operator to detect threat residues from a safer distance minimizing danger to people and equipment. Current fielded technologies for standoff detection of chemical and explosive threats are challenged by low area search rates, poor targeting efficiency, lack of sensitivity and specificity or use of costly and potentially unsafe equipment such as lasers. A demand exists for stand-off systems that are fast, safe, reliable and user-friendly.To address this need, ChemImage Sensor Systems™ (CISS) has developed reagent-less, non-contact, non-destructive sensors for the real-time detection of hazardous materials based on widefield shortwave infrared (SWIR) and Raman hyperspectral imaging (HSI). Hyperspectral imaging enables automated target detection displayed in the form of image making result analysis intuitive and user-friendly.Application of the CISS' SWIR-HSI and Raman sensing technologies to Homeland Security and Law Enforcement for standoff detection of homemade explosives and illicit drugs and their precursors in vehicle and personnel checkpoints is discussed. Sensing technologies include a portable, robot-mounted and standalone variants of the technology. Test data is shown that supports the use of SWIR and Raman HSI for explosive and drug screening at checkpoints as well as screening for explosives and drugs at suspected clandestine manufacturing facilities.

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Section: Portable Hyperspectral Sensor (Verovision™)mentioning

confidence: 99%

Advanced shortwave infrared and Raman hyperspectral sensors for homeland security and law enforcement operations

et al. 2015

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“…Acquiring these spectra is time‐consuming and requires expensive and bulky instrument. In many scenarios, fast measurement speed are needed, such as explosives or hazardous chemical detection [ 15,16 ] and field environmental monitoring. [ 17,18 ] Ultrafast material identification has been challenging using traditional mid‐infrared spectroscopy.…”

Section: Introductionmentioning

confidence: 99%

Sparsity for Ultrafast Material Identification

Qu,

Zhou,

Xiang

et al. 2024

Laser & Photonics Reviews

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Mid‐infrared spectroscopy is often used to identify material. Thousands of spectral points are measured in a time‐consuming process using expensive table‐top instrument. However, material identification is a sparse problem, which in theory can be solved with just a few measurements. Here the sparsity of the problem is exploited to develop an ultra‐fast, portable, and inexpensive method to identify materials. In a single‐shot, a mid‐infrared camera can identify materials based on their spectroscopic signatures. This method does not require prior calibration, making it robust and versatile in handling a broad range of materials.

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“…The medical field is one of the main areas where hyperspectral imaging has shown great potential [1], with several studies demonstrating using hyperspectral imaging in detecting cancer [2,3], monitoring ischemia [4], detecting dental caries [5], and guided surgery [6]. Other areas of application include industrial sorting [7], agriculture [8], and security [9]. Different techniques were developed for hyperspectral data acquisition, which can be divided under the following categories:…”

Section: Introductionmentioning

confidence: 99%

Spatial scanning hyperspectral imaging combining a rotating slit with a Dove prism

Abdo¹,

Badilita²,

Korvink³

2019

Opt. Express

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We present a new concept for spatial scanning hyperspectral imaging. Spatial scanning is one of the main methods used for hyperspectral data acquisition and can provide high spectral resolution over a wide spectral range. However, conventional techniques, such as the whiskbroom and the pushbroom techniques, suffer from the need for relative motion between the target and the imaging system, which increases the complexity on the hardware side and limits the application possibilities. Our new approach combines a rotating slit and a co-rotating Dove prism. The rotating slit scans the target image by selecting one line from the image at each angular position of the slit. The rotating Dove prism is used to synchronously realign the transmitted light from the selected image line with respect to the transmission grating to allow the projection of the diffracted light over the same range of pixel columns of the image sensor to facilitate data acquisition and extraction of spectral information. The new approach enables the spatial scanning of the target image without the need for relative linear motion or the use of additional external equipment and therefore opens the door for more application scenarios.

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Development of a handheld widefield hyperspectral imaging (HSI) sensor for standoff detection of explosive, chemical, and narcotic residues

Cited by 12 publications

References 0 publications

Advanced shortwave infrared and Raman hyperspectral sensors for homeland security and law enforcement operations

Advanced shortwave infrared and Raman hyperspectral sensors for homeland security and law enforcement operations

Sparsity for Ultrafast Material Identification

Spatial scanning hyperspectral imaging combining a rotating slit with a Dove prism

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